Mesophon now pays half as much as it did previously for rawMaterials (minerals of any kind) and for organic food. For T&E empires, it is now roughly equally as efficient to make and sell ship components as it is to sell minerals mined from "abundant" deposits (previously the minerals would have been twice as cost-effective). Selling mnerals mined from "major" deposits will now be half as cost-effective as building something like light jumpdrives, so T&E empires shouldn't bother producing minerals for sale unless a planet has abundant deposits or if it's generating more of some vital resource like hexacarbide than in needed by all the other worlds trading with a capital.

Behind the scenes, attackValue (called "power" in-game) is now calculated automatically instead of specified on a per-unit basis. Some ships, most notable starfrigates, have seen their power drop substantially while other power values have ballooned, reflecting the era3 forum changes that Imperator championed and which have been in place for about a month now. Mesophon ship sales prices have not changed, at least in the current game.

Hypersonic missile range reverted to the original 20 (25 was too powerful for the unit's cost and TL).

Trade hubs and T&E capitals/sector capitals now get the militia base structure (same as autonomous worlds), which builds basic infantry. This structure will not occur or be buildable on pre-existing designated planets but will appear on newly designated or redesignated worlds. By default it will only produce a small trickle of infantry but the amount of WUs allocated to the structure can be manually set. Mesophon worlds won't get to build infantry in Beta I or II, but they gain this ability in future games.

GDMs are no longer consumed after a single shot, range reduced to 10 (I forgot to alter the description on the structure, though, so it still claims they are consumed after a single use )

You can still see it in the game, e.g. in the Mesophon "buy" interface. It still underlies forces counts. It's calculated automatically. I'll need to update the units page on will.kronosaur.com/anacreon/eras/era3/units to reflect this).